Myth: "Pick the backlink tool with the bigger index"

Myth: "Pick the backlink tool with the bigger index"

The advice says whoever crawls more pages wins. I tested Ahrefs vs Semrush on three real domains I own, and index size barely changed my decisions.

What actually mattered was freshness and how each scores authority.

Ahrefs for index recency:
➕ New links showed up in 2-4 days in its Best by links report
➖ DR is a single black-box number, easy to game

Semrush for context:
➕ Authority Score blends traffic + toxicity, harder to fake
➖ Its fresh links lagged ~7-10 days on my smaller domain

Best for: link prospecting where recency matters, go Ahrefs. Auditing your own profile for risk, Semrush.

Price-vs-value: both start ~$129/mo. Index-size bragging is marketing. Buy on freshness and how the authority metric resists manipulation, not on the headline 'trillions of pages' claim.

Affiliate-neutral: I earn nothing from either link.

Pick this if you prospect daily: Ahrefs. Skip the index-size debate entirely.